If you are not on the home screen of the app, please navigate there using the button on the top-left corner of the screen, or by tapping the back button of your device
Once you are on the home screen, tap the button on the top-left corner of the screen to open the menu
Tap on your name/profile picture/email
You can edit the following information on your profile by tapping on them:
Display name
Email
Gender
Profile Photo
Tap on the "Save" button on the top-right corner to save the changes